Create a private API for controlling WebRTC's AEC3

extensions/browser/extension_function_histogram_value.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef EXTENSIONS_BROWSER_EXTENSION_FUNCTION_HISTOGRAM_VALUE_H_
 #define EXTENSIONS_BROWSER_EXTENSION_FUNCTION_HISTOGRAM_VALUE_H_
 
 namespace extensions {
 namespace functions {
 
@@ skipping 1210 matching lines @@
   AUDIO_GETMUTE,
   AUDIO_SETMUTE,
   AUDIO_GETDEVICES,
   VIRTUALKEYBOARD_RESTRICTFEATURES,
   NETWORKINGCASTPRIVATE_VERIFYDESTINATION,
   NETWORKINGCASTPRIVATE_VERIFYANDENCRYPTCREDENTIALS,
   NETWORKINGCASTPRIVATE_VERIFYANDENCRYPTDATA,
   NETWORKINGCASTPRIVATE_SETWIFITDLSENABLEDSTATE,
   NETWORKINGCASTPRIVATE_GETWIFITDLSSTATUS,
   ACCESSIBILITY_PRIVATE_DARKENSCREEN,
+  // This does not follow the naming convesion, but follows the other APIs in
+  // webrtcAudioPrivate.
+  WEBRTC_AUDIO_PRIVATE_SET_AUDIO_EXPERIMENTS,
   // Last entry: Add new entries above, then run:
   // python tools/metrics/histograms/update_extension_histograms.py
   ENUM_BOUNDARY
 };
 
 }  // namespace functions
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_EXTENSION_FUNCTION_HISTOGRAM_VALUE_H_